A line connection apparatus is disclosed. To hold a line, on-hook is set to a first terminal of a first person who holds the line to output voice of a second person for whom the line is held from the first terminal. First identification of the first person is recorded by corresponding to second identification of the second person. To set a lock, when the disconnection of the line being held is recognized, a connection condition to lock the line is acquired from the first person, for the first terminal to receive a re-connection request from a same second person who disconnects the line in a hold state. To control a connection in response to the re-connection request by the same second person, the first terminal is controlled to receive the re-connection request based on the first identification corresponding to the second identification indicated by the re-connection request.